The Aphodiinae and Rhyparinae [Coleoptera: Scarabaeidae] in Southern states of Mexico [Chiapas, Oaxaca, Puebla and Veracruz]

Sixty three species of the Aphodiinae and Rhyparinae are recorded from southern states of Mexico, including 3 species described as new: Aphodius chiapasensis sp. n., A. xalapensis sp. n. and Ataenius pseudousingeri sp. n. One new synonym is proposed: Ataenius crenulatus SCHMIDT, 1910 (= A. ricardsi HINTON, 1938, syn. nov.). Haroldiataenius limbatus (BATES) is given in new combination, Ataenius communis HINTON is recorded from Mexico for the first time. The new state records are provided for 36 species and new country records for 12 species. References to taxonomic and faunistic treatements of all species are given, available biological informations are summarized following the species distribution. Habitus of several species, illustrated by means of scanning electron microscope and drawings of pertinent morphological details are included.